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Precautions for the use of the 6403 bearing and how to maintain the bearing to extend its service life

How to judge the 6403 bearing failure A sound meter is used to check the size and sound quality of the rolling sound of the 6403 bearing in operation. Even if the bearing is slightly damaged such as peeling, abnormal and irregular sounds will be emit…

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More than a hundred schools in the UK have been closed due to the risk of collapse

In the UK, more than 100 schools were closed because of the danger of collapse In the UK, many schools use Autoclaved aerated cement (RAAC). This is a concrete material that is lighter. RAAC was found to be used in the roofs and buildings of a p…

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The concrete fast curing additives

The concrete fast curing additives concrete The concrete fast curing additives is an admixture that can greatly reduce the amount of mixing water under the condition of the same slump of concrete. The plasticizer is a kind of concrete admixture that…

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